Fitting and removing a drill bit or screwdriver bit (fig. D)
This tool is fitted with a keyless chuck to allow for an easy exchange of bits.
uLock the tool by setting the forward/reverse slider (2) to the centre position.
uOpen the chuck by turning it (3) with one hand while holding the tool with the other.
uInsert the bit shaft (14) into the chuck.
uFirmly tighten the chuck by turning it (3) with one hand while holding the tool with the other.
This tool is supplied with a
uTo remove the screwdriver bit from the bit holder, lift the bit from the recess.
uTo store the screwdriver bit, firmly push it into the holder.
Use
Warning! Let the tool work at its own pace. Do not overload.
Charging the battery (fig. A)
Warning! Do not charge the battery at ambient temperatures below 10 °C or above 40 °C. Recommended charging temperature: approx. 24 °C.
Note: The charger will not charge a battery if the cell temperature is below approximately 0 °C or above 60 °C. The battery should be left in the charger and the charger will begin to charge automatically when the cell temperature warms up or cools down.
uPlug in the charger (8) and switch on at the mains.
uInsert the battery (7) into the charger. Make sure that the battery is fully seated in the charger (8).
The charging indicator (10) will flash continuously (slowly). The charge is complete when the charging indicator (10) lights continuously. The charger and the battery can be left connected indefinitely with the LED illuminated. The LED will change to flashing (charging) state as the charger occasionally tops off the battery charge. The charging indicator (10) will be lit as long as the battery is connected to the
uCharge discharged batteries within 1 week. Battery life will be greatly diminished if stored in a discharged state.
Charging indicators
If the charger detects a problem with the battery, the charging indicator (10) will flash at a fast rate. Proceed as follows:
u
uIf the charging indicators continues flashing at a fast rate, use a different battery to determine if the charging process works properly.
uIf the replaced battery charges correctly, the original battery is defective and should be returned to a service centre for recycling.
uIf the new battery gives the same indication as the original battery, take the charger to be tested at an authorised services centre.
Note: It may take as long as 15 minutes to determine that the battery is defective. If the battery is too hot of too cold, the LED will alternately blink fast and slow, one flash at each speed and repeat.
Selecting the direction of rotation (fig. E)
For drilling and for tightening screws, use forward (clockwise) rotation. For loosening screws or removing a jammed drill bit, use reverse (counterclockwise) rotation.
uTo select forward rotation, push the forward/reverse slider
(2) to the left.
uTo select reverse rotation, push the forward/reverse slider to the right.
uTo lock the tool, set the forward/reverse slider into the centre position.
Selecting the operating mode or torque (fig. F)
This tool is fitted with a collar to select the operating mode and to set the torque for tightening screws. Large screws and hard workpiece materials require a higher torque setting than small screws and soft workpiece materials. The collar has a wide range of settings to suit your application.
uFor drilling in wood, metal and plastics, set the collar (4) to the drilling position by aligning the symbol 
with the marking (15).
uFor screwdriving, set the collar to the desired setting.
If you do not yet know the appropriate setting, proceed as follows:
-Set the collar (4) to the lowest torque setting.
-Tighten the first screw.
-If the clutch ratchets before the desired result is achieved, increase the collar setting and continue tightening the screw. Repeat until you reach the correct setting. Use this setting for the remaining screws.
HP148F4L/HP188F4 - Drilling in masonry (fig. F & G)
uFor drilling in masonry, set the collar (4) to the hammer drilling position by aligning the symbol 
with the marking (15).
uSlide the
Two-gear selector (fig. G)
uFor drilling in steel and for screwdriving applications, slide the
uFor drilling in materials other than steel, slide the
8
